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Multiple Choice
Which intermolecular forces are present in a molecule of CH\(_3\)OH (methanol)?
A
London dispersion forces, dipole-dipole interactions, and hydrogen bonding
B
Only dipole-dipole interactions
C
Only London dispersion forces
D
London dispersion forces and dipole-dipole interactions, but not hydrogen bonding
Verified step by step guidance
1
Identify the types of atoms and bonds present in the CH\(_3\)OH molecule. Methanol consists of a methyl group (CH\(_3\)) attached to a hydroxyl group (OH).
Recognize that all molecules exhibit London dispersion forces due to temporary fluctuations in electron density, so these forces are always present in CH\(_3\)OH.
Determine if the molecule is polar. The presence of the electronegative oxygen atom bonded to hydrogen creates a permanent dipole, so dipole-dipole interactions are present.
Check for hydrogen bonding, which occurs when hydrogen is directly bonded to highly electronegative atoms like oxygen, nitrogen, or fluorine. Since CH\(_3\)OH has an O-H bond, hydrogen bonding is possible.
Conclude that CH\(_3\)OH exhibits London dispersion forces, dipole-dipole interactions, and hydrogen bonding due to its molecular structure and bonding.